Internal-combustion engine



Fiied Feb. 4, 192a SShgets-Sheet l INVENTOR. 4409/2 CT flf/J A TTORNE Y.

Feb. 11, 1930. o. c. KREIS 1,746,539

INTERNAL COMBUSTI 0N ENGINE Filed Feb. 4. 1928 s Sheets-Sheet 2 A TTORNEY.

Feb. 11, 1930. o. c. KREIS INTERNAL COMBUSTION ENGINE Filed Feb. 4, 1 928 3 Sheets-Sheet 5 IN VEN TOR. 05 ca?- Iran's .im v I I ATTORNEY.

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Patented Feb. 11, 193d v. UNITED STATES PATENT OFFICE osonn 0. name, or DETROIT, mronronn, nssrenon T0 CONTINENTAL morons CORPORATION, or DETROIT, MICHIGAN, A CORPORATION OF VIRGINIA INTERNAL-GOMBUSTIQN ENGINE Application filed February 4, 1928. Serial NO. 251,789.

This invention relates to internal combustion engines and methods of operating such engines and has among its objects the provision of means and methods for improving the general performance of the engine.

In engines of the hydrocarbon type it is common practice to employ a carburetor or other mixing device for vaporizing the by drocarbon With air, the fuel mixture being then conducted to theengine cylinders for combustion. lit has been determined that a certain portion of the hydrocarbon is carried along with the fuel mixture in liquid form, not being vaporized by the carburetor. Such a condition is generally prevalent with the present day fuels commonly used for internal combustion engines, and is particularly pronounced in starting an engine as in cold weather or after the engine has been idle for a sufficient length of timeto have cooled relative to its normal operating temperature. At such times. and also to a lesser extent during the normal operation of the engine, the wet fuel particles including condensed portions of the fuel mixture tend to collect in the conduit intermediate the can burctor and cylinders, resulting in a sluggish action of the engine, difficulty in starting and a generally undesirable engine performance.

ll/[y invention in its broad aspects is appli cable to any type of hydrocarbon engine of the carbureted fuel mixture type. I have provided means and methods for removing the Wet fuel particles from the fuel mixture conduit at any suitable point or points. This may be done in several ways although ll prefer for simplicity and convenience to collect the wet fuel particles and'preferably to remove the collected Wet fuel particles by suction. Thus l may remove the wet fuel parti cles by auction derived by the engine piston, the-wet particles being conducted from the fuel mixture supply conduit to a point of disposal, preferably into the cylinder separately from the supply conduit. By such a general method and engine construction I ,have greatly improved the starting ability of the engine as well as overcoming the sluggish action of the engine.

One important application of my invention relates to sleeve valve and like types of engines. This general type of engine is-especially' susceptible to the dificulties and objections aforesaid and I have obtained greatly improved results in sleeve valve engines embodying my invention. l have illustrated my invention in connection with a typical well known type of engine known as the Burt-McCollum engine in which a single sleeve valve associated with each cylinder has a combined reciprocating and oscillating movement, although as aforesaid my invention is also applicable to'other types of sleeve valve engines as well as oppet valve and other.types of engines and? it is not my purpose to limit the scope of my invention en cept as specifically recited in the appended claims.

in the accompanying drawings in which like reference characters indicate correspond ing parts,

Fig. 1 is a sectional elevation view through a cylinder or the engine,

Fig. 2 is a plansectional view through the engine at the cylinder ports ig. 3 is a side elevation view of the intake manifold and associated parts and Fig. 4: is a diagrammatic view illustrating the porting action of the sleeve valve with the cylinder.

Referring to the drawings, reference character 10 illustrates the engine cylinder block having cylinders 11 jacketed at 12 for circulation of a cooling fluid. Each cylindermay be closed by a cylinder head 13 spaced within the cylinder to accommodate the movement of one or more sleeve valves la. The sleeve valve in the illustrated embodiment of my invention is positioned between the cylinder and piston 15, the latter oper-' ating the usual connecting rod 16 and engine crankshaft 17..

Each cylinder 11 has intake and exhaust ports 18, 19 respectively opening into intake and exhaust cylinder chambers 20, 21. These chambers are divided by walls 22 between adjacent cylinders and have up or and lower floors 23, 24 respectively where y the intake mixture and exhaust gases are confined. The

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intake chambers 20 communicate at the cylinder block openings 25 with av fuel mixture supply-manifold 26. The hydrocarbon, such as commercial gasoline, is carbureted by a usual or other suitable mixin device or carburetor illustrated at 27. he exhaust chambers 21 communicate at thecylinder block openings 28 with the exhaust mani- 34 connecting and driving each sleeve valve I ly and outwa by a link 35 pivotally connected at 36 with the sleeve and having a bearing 37 on the crank 34. Further details of the driving mechanism are deemed unnecessary for the present descriptionifof my invention since this and other suitable sleeve driving mechanisms are generally well known in the art.

'In order to collect or concentrate the unvaporized and condensed carbon and fuel mixture carburetor 27 to the intake clined the intake chamber passing from the orts 18, I have inoor 24 downwarddly, preferably from the ports 18 to the cy inder o enings 25. Any wet particles, tending to fbrrn or collect in this portion of the fuel mixture supply conduit will therefor pass by gravity action outwardly from the ports 18 to the opening 25. The wet particles or portions of the hydrocarbon and fuel mixture are collected in one or more traps or conduits 38, preferably having communication through branch conduits 39 at each cylinder with cylinder openings or ports 40. Each sleeve valve has a opening 41 suitably located for cooperation with the cylinder opening 40 as illustrated in Fig. 4. In the position of the orts 30, 31 illustrated in this figure the inta e ports 30 are in communication with the c linder intake ports 18, the sleeve and cylin er exhaust ports 32, 19 respectively being out of registration. The engine is thus completing its intake cycle, the piston 15 moving downwardly and the sleeve valve moving generally upwardly as indicated by the arrows in Fig. 1. At this (point in the cycle, as illustrated in Figs. 1 an 4, the piston 15 uncovers the sleeve auxiliary port 41 and the latter port moves into registration with the cylinder opening '40, thus inducing a suction, for at least a portion of the intake cycle, in the conduit 39 from the cylinder. As the piston 15 completes its intake stroke the port 41 moves out particles of hydro-' port or auxiliary of registration with the cylinder opening 40 as at 41 and is free from communication with opening 40 throughout the remaining cyclical events. The angle 42 of registration of ports 40, 4.1 may be varied according to the desired degree of suction and length of time for the suction in conduit 39. Thus, for example, the relative sizes of these ports and their osition with respect to the intake cycle 0 the main sleeve and cylinder ports may be varied as desired. In Fig. '4 the sleeve intake and exhaust ports 30, 31', res actively represent the sleeve ports 30,31 wlien the sleeve has 7 just completed its exhaust cycle, intake about 38 and will be removed at cylinder in order to obtainthe same conditions of operation for each engine cylinder although if desired the headers 38 may com- -municate with one-or any number of the cylinders, suitable points for final disposal of the wet particles removed from the intake system.

Other suction means within the teachings of my invention may be employed for removing the wet fuel particles from the intake conducting system, as desired. Other adaptions and modifications of my invention will readily-suggest themselves from the teachings of my invention and I do not intend to limit the scope of In invention except as specifically recited in tile following claims.

What I claim as my invention is:

1. In an internal combustion engine, a cylinder, a piston, fuel mixture conducting means for the cylinder, and means independent of the fuel mixture conducting means for positively removing unvaporized portions of said fuel mixture from said conducting means.

2. In an internal combustion engine, a cylinder, a piston, fuel mixture conducting means for the cylinder, a conduit communieating with said fuel mixture conducting or the conduits 39 may extend to other 7 means, and means separate from said fuel mixture conducting means for producing a suction in said conduit.

3. In an internal combustion engine, a conduit for supplying a vaporized hydrocarbon to the engine cylinder, and a second conduit communicating with the first said conduit for removing therefrom unvaporized portions of the hydrocarbon, said second conduit also nuance communicating with the cylinder independ-' ently of the first said conduit.

4. In an internal combustion engine, a main pendently of theintalre system tor removing unvaporized hydrocarbon from the intake system through the second said conduit.

6. In an internal combustion engine, a conduit for supplyin a vaporized'hydrocarbon to the engine, an a second conduit communicating with the first said conduit tor removing therefrom unvaporired portions or the hydrocarbon, said second conduit communicating with a cylinder of the engine inde pendently of the first conduit. i

7. In an internal'combustion engine, a cylinder, a conduit for supplying a vaporized hydrocarbon to the engine cylinder, at second conduit cornmunicatin with the first said conduit for removing therefrom unvaporised portions of the hydrocarbon, said second conduit communicatin with the engine cylinder, and a valve controlling saidsecond conduit.

8. in an internal combustion engine, a cylinder, an intake system for supplying a vaporized hydrocarbon to the engine cylinder, a conduit communicating with the intake system for removing therefrom unvaporiaed portions of the hydrocarbon, said conduit opening into the cylinder, and a valve controlling said second conduit.

9. lln an internal combustion engine, a cyl inder, a piston, fuel mixture conducting means for the cylinder, separate means for removing unvaporiaed portions at said incl mixture from said conducting means, and a common valve controlling mechanism for both of said means.

10. In an internal combustion engine, a cylinder. a piston, sleeve valve means associated with the cylinder. and piston, fuel mixture conducting means for passing substantially the entire supply of fuel mixture to the cylinder controlled by said sleeve valve means, and means controlled by said sleeve valve means for removing unvaporizcd portions of said fuel mixture from said fuel mixture conducting means, said last means including an auxiliary conduit for passing the said unvaporized portions of the fuel mixture into the cylinder.

11. In an internal combustion engine, a cylinder, a piston a single sleeve valve having a combined reclprocating and oscillating movement, said cylinder and sleeve having cooperating intake and exhaust ports, fuel mixturesupply means for passing substantially the entire supply of fuel mixture to the cylinder, saidsleeve and cylinder having auxiliary cooperatltng ports, and fuel mixture conductmg means between the auxiliary cylinder port and the fuel mixture supply means.

12. In an internal combustion engine, a cylinder, a piston. a single sleeve valve having a combined reciprocating and oscillating movement, said cylinder and sleeve having cooperating intake and exhaust ports, fuel mixture supply means for passing substantially the entire supply oi fuel mixture to the cylmder, said sleeve and cylinder having auxiliary cooperating ports, and fuel mixture conducting means between the auxiliary cylinderport and the fuel mixture supply means, said auxiliary ports being positioned on the sleeve and cylinder respectively so that they are n registration during at least a portion at the 1ntake stroke of the piston thereby proolucing a suction in the said fuel mixture conducting means to remove therefrom unvaporizcd portions of the fuel mixture.

13. in an internal combustion engine, a

"cyl nder, a piston, fuel mixture supply means for passing substantially the entire supply oi fuel mixture to the cylinder, valve controlled means establishin communication between the cylinder-and 'uel mixture supply means during the intake stroke of the piston, and I valve controlled, means including a conduit openln mto the cylinder during at least a part o'li said piston intake stroke for removmg unvaporizeol portions of the fuel mixture from the fuelmixture supply means.

it. lln an internal combustion engine of the sleeve valve type, a cylinder having an intake port substantially in the longitudinal plane of the engine containing the cylinderaxis, sleeve valve means associated with the cylinder and ported for cooperation with said cylinder port, an intake chamber surrounding a portion of the cylinder in the vicinity of said cylinder port, said chamber having a lioor sloping downwardly and outwardly from said cylinder port for draining unvaporized particles of fuel intake mixture, and means supplying fuel intake mixture to said intake chamber.

15. in an engine of the sleeve valve type, a cylinder block having a cylinder formed with a plurality of intake ports located inwardly of the cylinder block substantially in the longitudinal plane of the engine containing the cylinder axis, an intake chamber in the cylinder block open to said cylinder ports and provided with a floor sloping downwardly and outwardly from said cylinder ports to one side of the cylinder block, and fuel mixture supply means for the intake chamber. p 16. In an engine of'the sleeve valvetypoy vice and said auxiliary a c linder block having a cylinder formed wit a plurality of intake ports substantially in the central longitudinal plane of the engine, an intake chamber in the cylinder block open to said cylinder ports, and provided with a floor sloping downwardly and outwardly from said cylinder ports to one side of the cylinder block, fuel mixture supply means for the intake chamber, and a conduit positioned to receive unvaporized portions of the fuel mixture drained by said intake chamber floor.

17. In an engine of the sleeve valve type, a cylinder block having a cylinder formed with a lurality of intake ports substantially in the longitudinal central plane of the engine, an intake chamber in the cylinder block open to said cylinder ports and provided with a floor sloping downwardly and outwardly from said cylinder ports to one side of the cylinder block, fuel mixture supply means for the intake chamber, and means inducing a suction in said conduit.

18. In an internal combustion engine, a cylinder, a piston, sleeve valve means concentric with the cylinder, said cylinder having main intake and exhaust ports lying substantially in a common plane perpendicular to the axis of the cylinder, said sleeve valve means provided with intake and exhaust ports respectively cooperating-with said cylinder ports, intake and exhaust manifolding devices respectively supplying fuel mixture to and conducting exhaust gases from said cylinder intake and exhaust ports, said cylinder having an auxiliary port below the said plane containing the main intake and exhaust ports, said sleeve valve means being additionally ported for cooperation with said auxiliar cylinder port during at least a portion of t e intake stroke of the en ine, and a conduit between said intake manifolding device and said auxiliary cylinder port.

19. In an internal combustion engine, a cylinder, a piston, sleeve valve means concentric with the cylinder, said cylinder having main intake and exhaust ports lying substantially in a common plane perpendicular to the axis of the cylinder, said sleeve valve means provided with intake and exhaust ports respectively cooperating with said cylinder ports, intake and exhaust manifolding devices'respectively supplying fuel mixture to and conducting exhaust gases from said cylinder intake and exhaust ports, said cylinder having an auxiliary port below the said plane containing the main intake and exhaust ports, said sleeve valve means being additionally orted for cooperation with said auxiliary cylinder port during at least a portion of the intake stroke of the engine, and a conduit between said intake manifolding decylinder port, said sleeve valve means having a combined reciprocating and oscillating movement.

20. In an internal combustion engine, a cylinder, a piston, sleeve valve means concentric with the cylinder, said cylinder having main intake and exhaust ports lying substantially in a common plane perpendicular to the axis of the cylinder, said sleeve valve intake stroke of the engine, and a conduit betweensaid intake manifolding device and said auxiliary cylinder port, said conduit having a relatively small conducting capacity compared with the conducting capacity of said intake manifolding device.

21. In an internal combustion engine, a cylinder, a piston, sleeve valve means concentric with the cylinder, said cylinder having main intake and exhaust ports lying substantially in a common plane perpendicular to the axis of the cylinder, said sleeve valve means provided with intake and exhaust ports respectively cooperating with said cylinder ports, intake and exhaust manifolding devices respectively supplying fuel mixture to and conducting exhaust gases from said cylinder intake and exhaust ports, said cylinder having an auxiliary port below the said plane containing the main intake and exhaust ports, said sleeve valve means being additionally ported for cooperation with said auxiliary cylinder port during at least a portion of the intake stroke of the engine, and a conduit betake manifolding device adjacent the side wall of the engine.

22. In an internal combustion engine, a cylinder, a piston, sleeve valve means concentric with the cylinder, said cylinder having main intake and exhaust ports lying substantially in a common plane perpendicular to the axis of the cylinder, said sleeve valve means provided with intake and exhaust ports respectively cooperating with said cylinder ports, intake and exhaust manifolding devices respectively supplying fuel mixture and to conducting exhaust gases from said cylinder intake and exhaust ports, said cylinder having an auxiliary port below the :said plane containing the main intake and exhaust ports, said sleeve valve means being additionally ported for cooperation with said auxiliary cylinder port during at leasta portion of the intake stroke of the engine, and a conduit between said intake manifolding device and said auxiliary cylinder port, said conduit having a relatively small conducting capacity to permit passage of unvaporized fuel particles but to restrict passage of vaporized fuel'mixture for the most part to saidintake manifolding device.

23. In an internal combustion engine, a piston, sleeve valve means concentric with the cylinder, said cylinder having main intake and exhaust ports lying substantially in a common plane perpendicular to the axis of the cylinder, said sleeve valve means provided with intake and exhaust ports respectively cooperating with said cylinder ports, intake and exhaust manifolding devices respectively supplying fuel mixture to and conducting exhaust gases from said cylinder intake and exhaust ports, said cylinder having an auxiliary port below the said plane containing the main intake and exhaust ports, said sleeve valvemeans beingadditionally ported for cooperation with said auxiliary cylinder port during at least a portion of the intake stroke of the engine, and a conduit between said intake manifolding device and said auxiliary cylinder port, said sleeve valve means comprising a single-sleeve valve having a combined oscillating and reciprocating movement.

' In witness whereof, I hereunto subscribe my name this 31st day of January, A. D. 1928.

. OSCAR C. KREIS. 

